Grinding-mill.



No. 854,861. I PATENTED MAY 28, 1907. J. F. WINGHELL, DEOD. L. L.WINOHBL'L, ADMINISTRATRIX.

GRINDING MILL. APPLwATIbN FILED SEPT. 29,1902. 2 SHEETS-SHEET UNITEDSTATgsfATENT OFFICE.

JAMES F. WIN OHELL, OF SPRINGFIELD, OHIO; LIDA L. WIN OHELL, ADMIN IS-TRATRIX OF SAID JAMES F. WINOHELL, DECEASED, ASSIGNOR TO CHARLES E.PEASE AND WILLIAM B. ANDERSON, OF DAYTON, OHIO.

GRINDING-MILL.

Specification of Letters Patent.

Patented m 28,-1907.

. Application filed September 29. 1902. Seri l NO- 125,308.

To (ti/Z "1071/0721; it may concern.

Be it known that I, JAMES F. WINoHELL, a citizen of the United States,and a resident of Springfield, in the county of Clarke and State ofOhio, have invented certain new and useful Improvements inGrinding-Mills, of which the following is a full, clear, and exactdescription.

My invention consists in certain improvements more especially applicableto what are known as attrition mills, wherein the grinding-plates ordisks are vertically mounted on horizontal shafts, and pertains to theconstruction of the standards for the journalbearings or hopsings, andthe method of clamping or securing the casing in place. The other partof my invention relates to an improvement in the release mechanism,whereby the adjusted revolving plates may be speedily moved or thrownaway from or out of their normal position or relation with each other,for any emergencies, without affecting their adjustment for the desiredquality of meal, when returned to place.

My invention will be more particularly pointed out and described in thefollowing specification, of which the accompanying drawings form a part;wherein Figure 1 is a front elevation of mill illustrating myimprovements; the j ournal-bearings or housings and its shaft and pulleyto the left of the casing (and which transmits power to one of thegrinders or plates in the casing in the opposite direction from theother or right hand side), being omitted, as it is unnecessary in theexemplification of my invention. Fig. 2 is an end elevation of theconstruction shown in Fig. 1. Fig. 3 is a detail view of my improvedrelease device illustrating it thrown off. Fig. 4 is a similar viewshowing same on.

Like letters of reference indicate identical parts in the variousfigures.

My invention relates to improvements in mills in which the material isground or reduced by attrition.

Theshaft a (there being a similar shaft extending out from the otherside of the casing A) is provided with the usual circular headplatesinside the casing A, to which the grinding plates or faces are secured.The material or grain is fed through a hopper on the mill into thecasing A, into the eye of one of the plates or disks, with .which it isprovided,

periphery. The grinding plates or faces are preferably provided withlongitudinal pockets or sockets, intermediate circumferential rings orridges.

The two plates or disks are made to revolve rapidly in oppositedirections to one another, and the material thrown outward by the rapidrotation of the plates, coming into contact with the rings istemporarily held and brought into violent contact with the otherparticles or portion of the grain in the casing and intermediate thegrinding disks, whereby the grain or material is powdered or reduced.

As before stated, each head-plate or disk is keyed or fastened to anindependent shaft a, (the one to the right of the casing A, only beingshown as suflicient to illustrate the invention) which has its bearingsor mountings in the journal bearings or standards a, of the properconstruction and provided with the usual babbitted sleeves or boxes andoil chambers. Mounted on and keyed to the shaft a, is the pulley B,which receives the power through the medium of a belt, and it in turnrevolves the shaft a, with its attached head and grinding disks. Thejournal-bearings or standards a, (1/, are slidably mounted on the baseor bed C.

The various parts heretofore described form no part of my invention.

As access to the casing A must frequently be had by reason of the wearof the grinding plates and for other causes, the casing A is constructedin sections as shown in the drawings, and rests on and is bolted orsecured to the sub-base C.

In mills as heretofore constructed, the j ournal-bearings or standardssupporting the shaft and pulley at the one side of the mill, weremounted on a movable base plate; and when it was desired to replace orhave access to the grinding-plates, the various sections or portions ofthe casing had to be released by unscrewing quite a number of nuts andwithdrawing the bolts, and then by the use of block and tackle the innerend of the axle with the head-plate and grinding faces or plates wasraised. In these former constructions, where the inner end of themovable bed-plate, with the standards having the oil chambers in thejournal bearings, was raised the desired height, it not onlynecessitated the provision of proper block and tackle and otherapparatus, but also additional labor, and in addition thereto was theloss of time and the loss of oil, the latter being caused by the tiltingof the oil chambers, all of which are quite important factors. The oilwould. thus be drained necessitating relilling or if forgotten, themachinery would become injured. Then again, another inconvenienceexperienced with the constructions heretofore in use, was the loss oftime, attendant upon the care necessary in putting the movable bed-platewith its mountings in proper position; as the proper and safemanipulation of mills of this description required very accurateadjustment of the shafts with their respective headplates andgrinding-faces; as the faces of the grinding-plates are quite frequentlybrought close together, and as each revolves at a high rate of speed inan opposite direction, any inaccuracy of adjustment causing the platesnot to run true, and permitting them to contact with each.- other, wouldresult in severe injury to the mill and consequent loss and expense.With my improved construction, the loss of time consequent upon theremoval of a large number of bolts and nuts; the necessity for blockandv tackle and its support; the loss of oil and time for re-oiling thedanger of not obtaining the proper re-adjustment; are entirely obviated.

I secure the standards a, (1 to the bed 0, by the clamping-plates l),l), which take over the foot or projection of the standards (1/, asclearly shown in Fig. 2, and the plate I), is bolted to and held inplace by the bolt One of these clamping-plates is provided for each footof the standards, and they are thus securely held in place.

As shown in Fig. 2, I provide the base or bed C, with lugs p, p, to theside of the base or feet of the standards a. The clamping plates 5, b,are provided with an opening to receive set screws 7", r. It will bereadily understood from the construction shown in Fig. 2, that when itis desired to adjust the standards a cross-wise of the base plate or bedt1, this can be accomplished by simply loosening the bolts 0, and thenupon turning the set screws r, in the proper direction, the standard a,will be drawn to either side as the case may be, this being possible byreason of the clamping plates 1), b, fitting over the lugs on the feetof the standards. The operation will be readily understood and furtherdescription will not be necessary.

Passing from one standard to the other is a connecting rod or link D,whereby the relative position of the standards a, (1 are maintained, andthe action of one made subi ject to the other. The one standard (U, is

screw rod is provided at its outer or tree end with a lever D, or anysuitable mechanism whereby the same may be turnedin the desiredthrection. The rod 1), also passes through a yoke or collar 0, which issecured to the bed or base t.

It will be seen that upon loosening the bolts 0, in the clamping-platest), I), the turning of screw rod t), through the medium of theconnecting rod l.) will movethe twostandards simultanetmslyhorizontallyon the bed As illustrated in the drawiu s, the lower section of thecasing provided with a horizontal tlange which rests on the tlange e, olthe sub-base (1, to which it is bolted. .1 prefer to provide the llanger, on the sub-base. with notches into which the bolts c, take, (as seenin Fig. 2); the reason for which will be hereinafter set forth.

The screw rod l), may be provided with a shoulder intermediate the yokeor collar o. whereby upon. turning it, it will retain its position. butthe threads passing through the threaded hanger or collar of thestandard will draw the standard along in the direction of the rod .l ()rthe rod l), might be tl1t:ttl(tl as could also the yoke or collar o. andupon. turning the rod l), the same would screw through the collar.lCither one ol' these methods may be employed, and the firstconstruction described is the one illustrated in the drawing. Theconnecting link or red i), will of course draw the other stand ard inthe same direction and to the same extent.

The one section of the casing A, l unite or link to the adjoiningstandard (1, by means of link E.

The 'asing must be securely fastened together, and this l. accomplish bythe use of a sullicient number of eye-bolts f, f, which I prefer toconstruct in the following manner. One section ol the casing A, isprovided with lugs between which are placed the bolts/if. which iprovide with an. eye at this end and these bolts are held in place by apin passing through the eye of the bolts from one lug to the other ascan readily be seen in Fig l. ()n the opposite section of the casing A,and at points in. the same horizontal plane with the bolt are studsintegral with the casing: these studs provided with av slot or grooveinto which the ends ol' the bolts], f, may drop. The ends of theeye-bolts are screw threaded and when. the bolts are in place, that is,when. they have been inserted in the slot or groove of the studs, thebolts being of sutlicient length to extend slightly beyond the studs,they are provided with nuts or washers which are screwed into place, andit y will thus be seen that by screwing these nuts 1 or washers theywill come adjacent the studs and draw the sections of the casingtogether. By using this method of clamping the seeprovided with screwrod D, (Fig. 1). This 1 tions together, the sections will be snugly IIOdrawn into place and can be very quickly accomplished. Of course, whenit is'desired to have access to the casing, it will be readily seen thatby merely loosening the washers or nuts, the bolts can be swung up outof the way and access had, but the bolts still be retained in properposition to be again fastened into place when it is desired.

In addition to loosening the bolts f, f, when access to the interior ofthe casing is desired, nuts on the bolts (2, which pass through theflanges on the lower section of the casing a, and sub-base C, must beloosened and also the bolts 0, in the clampingplate b,' and then uponturning the screw-rod D, by means of lever D or any hand-wheel, thestandards are simultaneously moved, retaining their relative positionwith each other, and with them, the side of the casing A, by reason ofthe link E.

While I have illustrated anddescribed the bolts f, f, as beingeye-bolts, it will be readily understood that this construction may bemodified and still accomplish the end in view. The bolts f,j, can beconstructed in many other ways, and I do not wish to be understood asconfining myself to the above construction.

The link or eye-bolt E, permits of transverse adjustment of thestandards and the shafting and pulley when the same is found necessary,and is made possible by simply loosening the bolt taking through the eyeof bolt E, thus allowing the same to swing slightly on the casing A.This transverse adjustment of the standards is accomplished by means ofthe set-screws and blocks beneath the legs of the standards asillustrated in Fig. 2.

The simplicity of my construction, and the rapidity and ease with whichthe mill may be handled and access had to the casing, is very apparent,and its advantages are obvious.

I will now describe the release mechanism illustrated in the drawingsand which forms a part of my invention.

Means, of course, must be provided for the proper lateral adjustment ofthe head-plates with their grinding faces or plates, to meet therequirement for varying quality of meal. The adjustment is accomplishedthrough the feed or temper-screw i, which passes through a threadedsleeve of a rider 1', and bears against the bearing of shaft (1. But oneof the shafts is intended to move or be adjustable laterally; and themanner of the bearing for the shaft forms no part of my invention. Thefeed or temper-screw '11, having been screwed in or out owing to whetherfine or coarse meal is desired, it of course, is then desirable to haveit remain so until the quality of the meal is intended to be changed.

As occasions frequently arise, either by reasonof a piece of metal orother foreign substance getting into the mill from the elevator, orotherwise to throw apart the grinding-plates and thus stop the action ofthe mill, it is very important to provide means for its accomplishment,and permit of a quick release. This has sometimes been accomplishedheretofore by having the temper or feed screw pass through a doublethreaded sleeve, the sleeve being provided with much coarser threadswhich take into the upper or central portion of a yoke 7r; the sleevebeing provided with a wheel or hand wheel at its outer end. Upon turningthe hand-wheel or lever back-ward, the sleeve is screwed out of theyoke, and in turn brings with it the temper or feed-screw, and thus thegrindingplates are released. It will be readily understood, however,that the time consumed in turning the lever and with it thethreadedsleeve far enough to affect the lateral relation of the plates,is often too great and thus frequently fails in its accomplishment. Inorder to accomplish the result for which it is intended, this quickrelease or emergency release should be made to act almostinstantaneously. To have this efiect and overcome the objections of thereleases as heretofore constructed, I have devised a release comprisinga cam Z, on the inside central portion or arch of the yoke 76 (a similarcam running in the other direction, being provided on the opposite sideof the central portion or arch of the yoke The sleeve j, (which isthreaded internally and through which the feed or temper-screw i passes)passes through the yoke 7c, and is provided on its inner end. with asomewhat arch shaped head j, whose ends ride on the cam.

The edges of the bearing-ends of the head which come in contact with theinclined portions of the cam, are preferably beveled to permit them toslide more readily.

It will be seen, that by turning the hand wheel m, less than half arevolution (see Fig. 4), the rider or head. j of the sleeve 3', will bethrown to the other ends of the cams as seen in Fig. 3, thus almostinstantaneously releasing the plates. I prefer to construct the cam Zwith a varying degree of incline, so that when the release is off, theseparation of the plates may not only be sufficient, but when it isdesired to throw it on again, it can be accomplished without thenecessity for too great an effort on the part of the operator.

The release having been thrown off, and the plates separated while thecasing A was still containing and receiving grain, when it is desired tothrow the plates into their proper juxtaposition, considerabledifiiculty would be encountered if the sudden incline of the cam weremaintained throughout, by the sudden impact of the plates with thegrain. To obviate this difficulty, I provide the cams with a slower orgradual incline as the rider 9', reaches its zenith, or normal position,thus requiring less power to bring the plates into their proper positionfinally in the gradual manner.

The yoke 76 is held in place by means of rods n, which are secured tothe standard. The rods n, are provided with coiled springs intermediatethe head or nut of the rod. and the feet of the yoke 7r, and is of thewell known construction. By this means the feed or temper-screw isyieldingly held in contact with the shaft bearing, and permits slightlateral movement of the shaft. This lateral play permitted by theautomatic springs, however, is not always sutficient for reasonsheretofore stated, and it is to supple ment their action, that the quickrelease is provided.

The advantages of my improved mill are readily apparent, and while, forthe purpose of exemplification, I have shown and described mechanismadapted to accomplish the results sought, certain mechanical changes orsubstitutions may be made without departing from my ii'rvention.

hat I claim as my invention, and wish to secure by Letters Patent, is:

1. In a grinding mill comprising the bed. or base, revolublc shatting,with braid-plates secured thereto, a sectional casing int-losing saidhead-plates, the combination of a pair of standards slidably mounted onsaid base and. to one side of said casing, a link intermediate of saidstandards and connected therewith, means whereby one of said standardsis connected to a section of said casing, and mechanism whereby the pairof standards and the easing-section are moved simultaneously in adirection parallel with the axis of the shaft, substantially as shownand in the manner described.

2. In a mill comprising the base and a sectional casing, a pair ofstandards, a link intermediateof and connecting said standards,revoluble shafting provided with head-plates, said standards supportingthe revoluble sha'fting provided with the head-plates, meansintermediate of the sectional casing, and one of said standards wherebythe relative position of the one to the other is controlled, one of saidstandards provided with a screw-threaded socket, a threaded rod takinginto the threaded socket in the standard, so that upon the turning ofthe red the pair of standards and sectional casing will be movedsimultaneously in the direction of said rod, substantially as shown andlor the purpose described.

3. A grinding mill conmrising bed or base, a sectional casing mountedthereon, a

pair of standards slidably mounted on the base, means intermediate orsaid standards whereby they are connected with each other,

s l a link connecting one or said standards with the sectional casing,in combination with means connected with one of said standards and thebed or base whereby the stamla'rds and sectional casing are movedsimultane ously but retained in their relative posit ions. substantiallyin the manner and lot the purpose speeilied, r2 w e t. The releasingmechanism tor the grimling-plates ol a mill, comprising a' \ieldinglheld yoke secured to one of the standards, a cam in the arch ol' theyoke. a sleeve passing through the yoke-arch and provided with a headadapted to ride on said cam, said sleeve being threaded internally toreceive the tem per or 'l eedscrew whose relation with the bearing olthe head-plate shalting is altered according to the position ol' thesleeve-head on the cam, substantially as shown and tor the purposedescribed.

5. in the releasing meclnmism lot the grinding plates o'l' a mill, ayieldingly-held yoke secured to one ol' the standards and having a camin its arch, a sleeve passing through the yoke-arch and provided with ahead adapted to ride on said cam, said sleeve being thr aded internallyto receive the temper or 'l'eed-scrc'w, whereby upon the traveling ol'said head on the cam, the posit ion ol' 1 he lcedscrew in its relationto the head plate shall bearing is altered, substantially in the mannerand lot the purpose specilied.

t5. lnthereleasingmechanisml'orgrimlingplates o'l" a mill, a yieldinglyheld yolv'e secured to one ol" the standards, a cam having varyingdegree of inclin and located in the arch ol' the yoke, a sleeve passingthrough the yoke-arch and provided with a head adapted to ride on said-am, said sleeve. adapted to receive the temper or teed-screw and havingcontrollable connection therw with, and mechanism secured to the outerend of said sleeve whereby the same may be operated and the relativeposit ion ol t he l'eed screw with the shalt bearing varied according tothe position ol' the sleeve-hem] on the am, substantially as shown andtor the purpose spec-i'l'ied.

7. in a mill comprising a bed or base. a pair ol standards slidablymounted on said bed or base and supporting the revoluble sha'l'ts=arrying the head-plates, a sectional casing inclosing the ends ol' theshalts carrying the head plates, a link intermediate ol and connectingwith the standards on one side of the sectional casing, mechanismconnecting one of said standards with the sectional arsing, andmechanism connccttal with one at said standards and the bed or basewhereby upon its operation the standards and casing-section may be movedsimultaneously, substantiall as shown aml inthe manner described.

itnesses:

(Tints. l Biuiruzo, Gnonon lllGllHlAX.

